Paper-making machine



Sept. 2, .1930. HELJN 1,774,553

PAPER MAKING MACHINE Filed March 8,1929 4 Sheets-Sheet 1 /4A:;31 rrn I M INVENTOR ATTORNEYS A. F. HELIN PAPER MAKING momma ,Filed March 8, 1929- Sept. 2, 1930.

MENTOR 154:4 ATTORNEYS Sept. 2, 1930.- I A. F. HELIN 1,774,553

PAPER IAKING IACHINB Filed March 8, 1929 4 Sheets-Sheet Z5 IN VENTOR WH'MAU'A Sept. 2, 1930.- A] F. HELI N 1,774,553

PAPER MAKING MACHINE Filed March 8, 1929 4 ShQetSP-Sheet 4 II I I l INVENTOR BY $3 12 21 26 A ORNEYS Patented Sept. 2, 1930 1 ,IUNITFED s'ra'ras PATENT OFFICE ALFRED F. HELIN, OF WATEBTOWN, NEW YORK, ASBIGNOR 1'0 THE BAGLEY AND BEWALL COMPANY, OI WATERTOWN, NEW YORK, A CORPORATION 01 NEW YORK PAPER-MAKING uacnma Application filed larch s,

This invention relates to certain improvements in paper making machines of that class in which the web is formed on a making wire, such as a Fourdrinier machine.

. In this class of machines, an endless forming wire is used on which the web is made, this wire passing over a series of suction devices which act to remove the water from. the forming web, the wire and web traveling over these suction devices. These suction devices are generally in the form of boxes, and the suction action tends to draw the wire down against the tops of the boxes, so that the mesh of the wire tends to form grooves which increase the frictional'resistance and V tend to injure the wire. In a copending application, Serial No. 231,830, new Patent 1,713 988, granted Ma 21 1929, to Charles W. valentine and Al red Helin, there is :0 shown and described an improved apparatus by which the suction boxes are iven an oscillating or angular movement re atively tothe wire, so that this tendency of the boxes to form grooves is effectually eliminated.

85 It is the especial object of the present invention to improve the mechanism by which this oscillating or angular movement of the boxes is effected so that a more even movement is produced and one in which the conao stant forward drag of the wire is, to some extent, compensated for, so that a mechanism which operates more smoothly andevenly is provided.

A further object of the invention'is to produce an improved mechanism in which moving parts are eliminated as far as possible, and no moving parts are present which extent across the machine.

With these and other objects not specifically referred to in view, the invention consists in certain novel parts, arrangements and combinations which will be described in con-- nection with the accompanying drawings and the novel features pointed out in the claims hereunto appended.

Generally speaking, the improved mechanism will include a cylinder and a piston on each side of the machine, these being actuated by fluid pressure, which may be either gaseous or liquid, the pistons and cylinders 1928. Serial No. 845,261.

being arranged to operate in opposite directions and being connected with the supports for the suction boxes, so that the desired os- .cillatmg or angular movement relatively to the wire will be given these parts.

A preferred construction for eifecting the objects of the invention is shown in the accompanying drawings, in which Figure 1 is a plan view, partly broken away, showing a part of the making wire, the suction boxes, and the mechanism for oscillating the boxes;

Figure 2 is a side elevation of the machine shown in Figure 1;

Figure 3 is a sectional view, partly in side elevation and partly in plan, showing the arrangement of cylinders and pistons with the controlling valves andpiping;

Figure 4 is a view similar to Figure 3 showin the parts in another position;

igure 5 is a view similar to Figures 3 and 4 sclliowing the parts in still another position, an

Figure 6 is a detail of the compensating cylinder. at the rear side of the machine.

Referring now to these drawings in detail, the suction box arrangement and its oscillating movements are the same as in the joint application above referred to. As shown, 30 indicates the making or forming wire of a Fourdrinier machine, and 31 the table rolls,

these parts being supported in suitable tram ing 32. The suction boxes, four of which are shown, are indicated by the numeral 33, and 34 indicates the usual upper guide roll, from which the Wire passes .over the couch roll 35, returning over the breast roll, not shown, over suitable supporting rolls 36, this construction being the usual one in Fourdrinier machines.

The suction boxes 33 extend across the machine and are mounted so that they are given an angular reciprocating movement and a simultaneous endwise or widthwise movement relatively to the wire. In the particular construction shown for efiecting this, there is provided a pair of longitudinal side frames 37, 38, on which 'is supported a pair frames, at each side, are standards 41, 42 and 43, which support top bars 44, to which the of sliding frames 39, 40. Supported on these suction boxes 33 are secured, as by hanger bolts 45. As shown, the hanger bolts pass through plates 46 pivoted at 47 to the bars, slots 48 being provided in the plates so that the bolts may havea swinging movement in these slots. V

The frames 39, 40 have a sliding movement on the side frames 37, 38, and by reciprocating these frames in opposite directions, through mechanisms hereinafter referred to, an angular movement of the suction boxes with respect to the wire is eflected. An additional si ewise or widthwise movement of the boxes relatively to the wire is also preferably given them and, in the particular showing for effecting this, there are provided two sets of keys or splines 49, 50, 51, 52, secured on the side frames 37, 38, these keys riding in grooves or slots formed on the under side of the sliding frames 39, 40. These keys are angularly arranged, the keys 49, 5O pointing inwardly and the keys 51, 52, on the opposite side of the machine, also pointing inwardly. With this arrangement, as the frames re'- ciprocate, the angularity of the keys and slots effects a sidewise or widthwise movement of tii'eframes, this movement taking place dur' ing' the reciprocating or endwise movement before referred to.

The construction so far described is sub stantially that of the copending application above referred to. In accordance with the present invention, an improved mechanism is provided for effecting the angular and widthwise movement of the sliding frames, in which the use of gears, levers and moving parts extending across the machine is eliminated, this movement, according to the present invention, being effected by the use of a pair of fluid operated pistons arranged to work in opposite directions, with controlling valves operating automatically to reverse the movements of the pistons.

\Vhile the particular construction and arrangement of the parts may be somewhat varied, the mechanism will include a pair of cylinders and pistons which are actuated by fluid pressure, means being provided for automaticall reversing the direction of movement 0 the pistons so as to effect the reciprocating movement of the slides, and in the best constructions these pistons will be actuated by hydraulic means. Referring now to the particular construction illustrated, there is provided a cylinder 10 for the front side of the machine and a cylinder 11 for the read side of the machine. The piston rod 14 of the cylinder 10 is connected, through a depending member 16, with the sliding frame 40, before referred to, and the piston rod 15 of the cylinder 11 is connected, through a depending member 17 with the sliding frome 39 on the other side of the ma.- chine. Each of these cylinders is provided with a piston, the cylinder 10 having av piston 12 and the cylinder 11 having a piston 13. Connections are provided for moving these pistons simultaneously in opposite directions to obtain the desired reciprocating movement of the sliding frames supporting the suction boxes and means are also provided whereby the movement of the pistons is automatically reversed to provide the desired reciprocating movement.

While these means may vary somewhat in construction, there is provided an auxiliary oscillating valve which is mechanically actuated by means of adjustable stops 18 carried on an extension 16 of the bracket 16, before referred to, and this auxiliary valve controls the movement of a fluid operated main valve, which in turn effects the required move ments of the pistons 12 and 13.

The auxiliary valve 1 is mounted to rotate in a casing 1' supported on the casing 11" of the main valve a. This auxiliary valve is, in the construtcion shown, provided with two ports or passages2, 3, which are arranged to connect passages 4, 5, which act to deliver pressure fluid to and from the opposite ends of the main valve cylinder (1 to their respective exhaust passages 6, 7 or to connect them with the presure fluid supply passage 8. Referring to Figure 3, in the position of the parts shown, passage 2 connects passage 4 to its exhaust passage 6 for discharge of fluid from the left hand end of the main valve a, and passage 3 connects passage 5 with pressure fluid passage 8 for supplying fluid to the right hand end of the main valve cylinder at to effect a movement of the main valve to the left, this movement of the main valve being substantially completed in Figure 3.

The main valve a comprises four pistons separated to provide between them annular spacing or ports 9, 9 and a pressure supply port 20.

In Figure 3 exhaust passage 6 is connected by exhaust port 9 to discharge ipe 21 for discharging of fluid from the le t hand end of cylinder a, while pressure supply port 20 connects the pressure fluid supply pipe 22 to a pipe 23, which delivers pressure fluid against the left side of the piston 13 for causing it to move to the right. At the same time exhaust port 9 opens a pipe 24 connecting With the left side of piston 12 to discharge pipe 25 for releasing of pressure from the left side of piston 12. The rear sides of pistons 12, 13 are connected by piping 26, 26, so that movement of piston 13 to the right causes a simultaneous movement of pis ton 12 to the left, as shown in Figure 3.

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In Figure 4 this movement of the pistons 12,

which causes a reversal of the main valve and a reversal in the movements of the pistons 12 13.

In Figure the parts are shown with the movement of the main valve begun in Figure 4 as completed, with the pistons 12, 13 nearing the completion of their movements and the auxiliary valve 1 partly moved for the return movement of the main valve to the left, that is to effect an e ualization in the strokes of the two pistons. f, for any reason, there is any leakage from the cylinders back of the pistons, thus causing a difference in the action of the back piston relatively to the other piston, the back piston will travel the full length of its stroke in one direction or the other, 0 ening one of the valves and permitting the uid to flow in and fill up the space in back of the piston, thus equalizing the pressure and causing an equal operation of the two pistons.

or the purpose of filling the back ends of the cylinders at the start of the operation of the machine throu h the pipes 26, 26', a valve 55 is provided so that this can be done.

It will be seen that with the construction shown and described there is an equal application of power to both the sliding or oscillating frames carrying the suction boxes, and

I screws, gears, levers and like mechanical connections are eliminated, as are also other moving members extending across the machine, and the same movement is effected on both the front and back of the machine. Furthermore coupling the rear side of the two cylinders behind the pistons tends to effect a more even operation of the parts and compensates for the'pull of the wire, which is traveling only in one direction. The movement of the wire against the suction boxes tends to increase the movement of the slides in the forward direction and retards the movement of the other slide which is moving in the other direction. Because of this equalizing of the pressure in the two cylinders, the movement caused by the pull of the wire on one of the slides has an equal effect on the other slide.

- While the invention has been shown and described in its preferred form, it will be understood that the particular pressure mechanism has been shown and described as illustrative only of the invention and that changes and variations may be made in the construction and arrangement of the parts without departing from the invention as defined in I the appended claims. What I claim is:

1. In a paper making machine, the combination of a making wire, suction devices over which the wire passes, fluid pressure operated means on each side of the machine for giving the suction devices angular movements in opposite directions relatively to the wire, and means for equalizing the pressure of the fluid pressure means.

2. In a paper making machine, the combi nation of a making wire, suction devices over which the wire passes, apair of slides by which the suction devices are carried, fluid pressure 0 erated means connected to each'of the slides or reciprocating the slides in opposite directions relatively to the wire, and

means for equalizing the pressure of the fluid pressure means.

3. In a paper making machine, the combination ofa making wire, suction devices over which the 'wire passes, a pair of slides by which the suction devices are carried, fluid pressure operated means for each of the slides for giving the slides reciprocating movements in opposite directions relatively to the wire, means for reversing the movement of the fluid pressure means, and means for equalizing the pressure of the fluid pressure means.

'4. In a'paper making machine, the combination of a makingwire, suction devices over which the wire passes, a pair of slides by which the suction devices are carried, a fluid pressure operated iston connected to each of the slides, a valve or affecting the simultaneous reciprocating movement of the pistons in opposite directions, and means for equalizing the movement of the pistons.

5. In a paper making machine, the combination of amaking wire, suction devices over which the wire passes, a pair of slides by which the suction devices are carried, a fluid pressure operated piston connected to 'each of the slides, a valve for effecting the simultaneous reciprocating movement of the pistons in opposite directions, means for equalizing the movement of the pistons, and means for reversing the valve.

6. In a paper making machine, the combination o a making wire, suction devices over which the wire passes, a pair of slides by which the suction devices are carried, a

fluid pressure operated piston connected, to

each of the slides, means for equalizing the movement of the pistons, a valve for effecting the simultaneous reciprocating movement of the pistons in opposite directions, and-means connected with one of the slides for reversing the valve.

7. In a paper making machine, the combination of a making wire, suction devices over which the wire passes, a pair of slides by-which the suction devices are carried, a fluid pressure operated piston connected to each of the slides, cylinders in which the pistons work, a valve for efiecting the simultaneous reciprocating movement of the pistons in opposite directions, and means for equalizing the pressure in the cylinders.

8. In a paper making machine, the combination 0 a making wire, suction devices over which the wire passes, a pair of slides by which the suction devices are carried, a fiuid pressure operated piston connected to each of the slides, cylinders in which the pistons work, a valve for effecting the simultaneous reciprocating movement of the pistons in opposite directions, and means connected with one of the pistons for equalizing the pressure in the cylinders.

9. In a paper making machine, the com bination of a making wire, suction devices over which the wire passes, a pair of slides by which the suction devices are carried, a fluid pressure operated piston connected to each of the slides, cylinders in which the pistons work, a valve foreflectin-g the simultaneous reciprocating movement of the pistons in opposite directions, and equalizing valves in one of the. pistons. I 1

10. In a paper making machine, the combination of amaking wire, suction devices over which the wire passes, a pair of slides by which the suction devices are carried, a fluid pressure operated piston connected to each of the slides, cylinders in which the pistons work, a valve controlling the passage of pressure fluid to the same side of each piston, and fluid connections connecting the opposite sides of each piston.

11. In a paper making machine, the combination of a making wire, suction devices over which the wire passes, a pair of slides by which the suction devices are carried, a fluid pressure operated piston connected to each of the slides, cylinders in which the pistons work, a valve controlling the passage of the simultaneous reciprocating movement of the pistons in opposite directions.

14. In a paper making machine, the combination of a making wire, suction devices over which the wire passes, a pair of slides by which the suction devices are carried, a fluid pressure operated piston connected to each of the slides, an auxiliary valve operated by one of the slides, a main valve controlled by the auxiliary valve for effecting the simultaneous reciprocating movement 01" the pistons in opposite directions, and means for controlling the time of movement of the main valve.

In testimony whereof, I have hereunto set my hand.

ALFRED F. HELIN.

pressure fluid to the same side of each piston,

fluid connections connecting the opposite sides of each piston, and means for equalizing the pressure in the cylinders.

12. In a paper making machine, the combination of a making wire, suction devices over which the wire passes, a pair of slides by which the suction devices are carried, a

, fluid pressure operated piston connected to each of the slides, a main valve for effecting the simultaneous movement of the pistons in opposite directions, and means for controlling the time of movement of the main valve.

13. In a paper making machine, the combination of a making wire, suction devices over which the wire passes, a pair of slides by which the suction devices are carried, a fluid pressure operated piston connected to each of the slides, an auxiliary valve operated by one of the slides, and a main valve controlled by the.auxiliar'y valve for effecting lit) 

